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1.
A repulsive scent creeping from an unkempt vagina, usually causing a burning sensation in the eyes as one attempts to muff dive. Serious cases may cause skin irritation.
My lungs almost caved in when I got a whiff of that stank puss, it made me want to eat her ass.

Close your legs; your stank puss is coming out of your jeans.
by guardo December 16, 2003
 
2.
A pussy in desperate need of a douche. Smells really bad
"Yo my dick smells like shit cause of that stankpuss!"
by Frank Sidor November 11, 2005
 
3.
a girls pussy that smells REALLY bad (often used as a derogatory comment)
After Daniel fingered his girlfriend Kandy, he noticed that his finger still smelled horrible the next day and said "Damn that girl has got some major stankpuss!"
by themasterofsexdefinitions February 15, 2004